Title :
Analysis and compensation of dead time effects for the AC servo driver
Author :
Qin, Haitao ; Shen, Anwen ; Zhang, Qiao ; Wang, Wenyu
Author_Institution :
Dept. of Control Sci. & Eng., HuaZhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A on-line dead time compensation method for the alternating current (AC) servo is proposed. By apply the Fast Fourier Transform (FFT) to the compensating voltage in one period of three phase output current, without any additional hardware, the dead time effects is eliminated by compensate the 1th, 5th, 7th harmonic components only. The results of simulations and experiments well demonstrate the effectiveness of the proposed method.
Keywords :
AC motors; compensation; driver circuits; fast Fourier transforms; servomotors; 1th harmonic components; 5th harmonic components; 7th harmonic components; AC servo driver; FFT; alternating current servo; dead time effects; fast Fourier transform; on-line dead time compensation method; three phase output current; Hardware; Insulated gate bipolar transistors; Leg; Magnetic analysis; Phase distortion; Pulse width modulation; Pulse width modulation inverters; Servomechanisms; Switches; Voltage; AC-Servo; Dead-Time Compensation; Permanent magnet synchronous motor (PMSM);
Conference_Titel :
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5177-7
Electronic_ISBN :
978-4-88686-067-5
DOI :
10.1109/ICEMS.2009.5382980
